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(No Model.)

- G. W. BUPPORD.

PIPE TONGS. No. 432,195. Patented July 15,1890.

2J 66 1 9KB 3 4 O D fi 0 G z 67/ c (if U W V UNITED STATES PATENT OFFICE.

GEORGE W. BUFFORD, OF BROOKLYN, NEWV YORK, ASSIGNOR OF ONE-HALF TO JOHN E. KITSON, OF SAME PLACE.

PlPE-TONGS.

SPECIFICATION forming part of Letters Patent No. 432,195, dated J uly 15, 1890.

Application filed December 31, 1889. Serial No. 335,491. (No model.)

To aZZ whom it may concern.-

Be it known that I, GEORGE W. BUrFonD, of Brooklyn, in the county of Kings and State of New York, have invented a certain new and useful Improvement in Pipe-Tongs,

of which the following is a specification.

My improvement relates to pipe-tongs in which the pipe to be turned is gripped between a jaw or jaws having a serrated edge or edges and a chain, one end of the chain being permanently secured to the wrench, and one end thereof being free and adapted to be passed about the pipe and then to be engaged with the body of the tongs.

[5 I will describe in detail a wrench embodying my improvement, and then point out the novel features in a claim.

In the accompanying drawings, Figure 1 is an edge View of a wrench embodying my improvement and showing the same as engaging a pipe. Part of the chain shown in this view is in section. Fig. 2 is a sectional view of the same, taken on the line a; co, 1. Fig. 3 is a View in perspective of one of the links employed in the chain.

Similar letters of reference designate corresponding parts in all the figures.

A designates a handle, preferably made'of metal. To this handle are secured jaws B 0 B. These jaws, as shown, are somewhat conical in shape near their outer ends, and their outer edges upon said conically-shaped portions are serrated or provided with teeth a. I have shown screws a, by which the 5 jaws B B are secured to the handle A. Near the extremity of the handle A, which is secured to the jaws 13 B, the handle is provided upon its edges with recesses 12 b.

D designates a chain, which chain is permanently secured near one of its ends to the jaws B B. It is thus permanently secured by a pin 0, which extends through the jaws B I3 and through one of the joints of the first link. The pin also extends through a 5 metallic anchor-piece 0, near one of the ends of said anchor-piece. The other end of said anchor-piece is secured to the jaws by means of a pin 0, which extends through apertures in the jaws and also through an aperture in the anchor-piece.

Each of the links of the chain in my improvement comprises two members of flat metalD D, which members are perforated near their ends, and two members D D The members D D are each perforated near their ends, and are provided upon their exteriors with arc-shaped hooks D These hooks extend outwardlyconsiderably beyond the surface of the main or body portions of the members D D In securing the mem- 6o bers of the links together the members D D are placed between the members D D in such manner that the perforations in the end portions of the different members will be opposite each other. Rivets d are then passed through the perforations thus brought opposite each other, which rivets are upset upon their outer ends and operate to secure the different members together. The different members may, however, turn freely 7o relatively to each other. It is to be observed that the ends of the rivets dare considerablyinward of the outer edges of the hooks D Extending inwardly from the sides of the jaws B B, and opposite those where the end 7 5 of the chain is permanently secured, are stout pins or projections F, which pins or projections may be formed with the jaws, or may be secured therein in any suitable manner. The chain having been passed. about a pipe, as shown, the free end is brought round until it is made taut, and the hooks D are then caused to engage the pins or pro jections F. The wrench may then be operated to cause the turning of the pipe.

It will be observed that the strain exerted upon the chain is borne almost wholly by the hooks D, and not by the rivets which unite the links. The hooks, owing to their shape and arrangement, cannot be bent or 0 deflected. The hooks also may be very readily engaged with or disengaged from the pins or projections F, and by engaging two of the hooks with pins F the former will be securely maintained in position against accidental displacement, even though the wrench be used in an inverted position.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is-

In a pipe-wrench, the combination, with a handle, of a pair of jaws having serrated said hooks may be engaged, substantially as outer edges and secured to said handle, a specified. chain permanently secured near one of its ends to the wrench, said chain comprising GEORGE LUFE links having members provided upon their 'Witnesses:

exteriors with hooks, and pins or projections. FREDK. HAYNES, extendinginwardly from said jaws,\vith which GEORGE BARRY. 

